﻿using System;

class FirstTenMembers
{
    static void Main()
    {
        int first = 2;
        int second = -3;
        for (int members = 1; members <= 5; members++)
        {
            Console.WriteLine(first);
            Console.WriteLine(second);
            first = first + 2;
            second = second - 2;
        }
    }
}